Equi-Spot Spot-On Fly Control for Horses kills and repels houseflies, stable flies, face flies, horn flies, eye gnats and ticks on horses. Also aids in the control of horse flies, deer flies, mosquitoes and black flies on horses. Waterproof and sweatproof! Apply 10 ml tube as follows: 5 ml along back line, 1 ml to top of forehead and 1 ml to the back of each leg. Do not re-apply for 14 days. Not for use on foals less than 12 weeks old. Contains 45% permethrin.